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Finding the Fourth Proportional to 450,041.71, 620,764.93 and 288,641.11

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Solution

The fourth proportional to 450,041.71, 620,764.93 and 288,641.11 is: 398,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,041.71 : 620,764.93 = 288,641.11 : x
  2. Step 2: Convert to fraction form
    450,041.71/620,764.93 = 288,641.11/x
  3. Step 3: Cross multiply
    450,041.71x = 620,764.93 × 288,641.11
  4. Step 4: Simplify right side
    450,041.71x = 179,178,278,444.27
  5. Step 5: Solve for x
    x = 179,178,278,444.27/450,041.71
  6. Step 6: Final answer
    x = 398,137.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.